Use watch as the last resort

The author strongly advises against overuse of the `watch` function in Vue.js, recommending it only as a last resort despite its reliability and ease of use. `watch` creates implicit dependencies, making code harder to debug and maintain, especially in large projects. Tracing the source of changes becomes difficult, potentially leading to unnoticed errors during testing or production. The implicit nature of `watch` increases code coupling, making refactoring a challenge and increasing the risk of unexpected breakages. Furthermore, improper use of `watch` can easily result in infinite loops, requiring cumbersome workarounds. The complexity introduced by numerous `watch` instances significantly reduces code readability and understanding. Alternatives like direct method calls, computed properties, custom events, and lifecycle hooks are often superior. While `watch` has its place, prioritizing these alternatives leads to cleaner, more maintainable Vue applications. Careful consideration of alternatives before using `watch` is crucial for improving code quality and reducing long-term maintenance issues. Using `watch` cautiously and thoughtfully is key to preventing the problems it can create.